Thanks, Stuart, and thank you to everyone for joining us today. I'm excited to step into the CFO role at an important time for KBR. Microsoft built a strong finance organization and a disciplined foundation, and I'm grateful for his leadership and the opportunity to build on that work. Looking ahead, my focus is straightforward: deliver on our financial commitments, support the financing and investor milestones associated with the Spin and maintain a disciplined financial structure that advances our strategy. With that, let's turn to the fourth quarter results on Slide 11. Revenues were $1.85 billion, down $223 million year-over-year, primarily reflecting award timing in MTS and reductions in EUCOM contingency scope. More importantly, profitability and execution were strong. Adjusted EBITDA increased $12 million and margins were 12.6%, up 190 basis points, driven by disciplined program execution and favorable mix as EUCOM volumes declined from lower-margin work. Adjusted EPS was $0.99, up $0.09 year-over-year, reflecting the stronger adjusted EBITDA performance and lower share count following open market repurchases. Turning to Slide 12 and our full year results. Revenues were approximately $7.8 billion, up modestly year-over-year despite the market volatility. We delivered strong performance in defense and intelligence programs, supported by the LinQuest acquisition, continued momentum in Australia aligned with its defense priorities and sustained demand in STS across our engineering, professional services and technology offerings. Adjusted EBITDA increased $100 million, and full year margins were 12.4%, up more than 100 basis points year-over-year. As Stuart mentioned, this performance reflects prioritizing high-margin growth, disciplined program execution and continued delivery on cost-saving initiatives across the business. Adjusted EPS was $3.93, up $0.60 versus prior year and supported by the increase in adjusted EBITDA and share repurchases, partially offset by higher interest expense and higher income taxes due to international mix in our underlying rate. That same dynamic is reflected in our 2026 ETR guidance, which I'll cover in a moment. Cash was a key highlight. Operating cash flow was $557 million, representing 110% conversion to adjusted net income. We exited the year with strong liquidity heading into 2026. Overall, revenues and adjusted EBITDA within our ranges for the year and adjusted EPS and operating cash flow exceeded the top end of our guided ranges. Turning to Slide 13. I'll focus on a few financial proof points that support the progress Stuart just outlined in Sustainable Tech. As discussed earlier, the market environment shifted materially in 2025. From a financial standpoint, STS offset those headwinds through mix, geographical expansion and increased exposure to OpEx-oriented and structurally stronger demand areas. That operating discipline is clearly showing up in the quality of earnings. Adjusted EBITDA has grown 16% since 2023, outpacing revenue growth and reflecting improved mix and cost execution. While margins were modestly elevated in 2025, we are on pace to meet our long-term margin target of 20% plus in 2027. This performance was delivered alongside strong cash conversion of more than 80% and a trailing 12-month book-to-bill of 1.2, providing good visibility as we enter 2026. Lastly, due to the recurring nature of risk and alignment with our OpEx strategy, we plan to update our adjusted EBITDA calculation beginning in 2026 to reflect our share of unconsolidated JV operating income. Previously, risk and other unconsolidated JVs were reflected through JV net income. This change improves transparency and aligns EBITDA with how we manage the business. Prior periods will not be recast as the impact is not material. Turning to Slide 14. I'll focus on the financial implications of the Mission Tech progress Stuart just outlined. From a financial perspective, the portfolio continues to move towards higher quality of earnings, driven by mix improvements, disciplined program selection and favorable contract structures aligned to the most durable and well-funded national security priorities. Since 2023, the integration of LinQuest, strong international execution and a more selective business development approach have supported mid-single-digit revenue growth while improving margin quality. Importantly, that improvement has been driven by commercial acumen and contract discipline, including a greater focus on fixed price and technically differentiated work, not volume. Even with near-term headwinds from award timing and process activity, the team remained highly selective in bids and recompetes, prioritizing returns and contract terms over scale. That discipline is showing up in sustained margin performance and a robust pipeline. Against that backdrop, the business is preparing for the spend with improving economics, solid visibility and strong alignment to long-term national security demand. Turning to Slide 15. Capital allocation and balance sheet discipline remain key strengths. In 2025, we returned a record $413 million to shareholders through buybacks and dividends, and we ended the year with net leverage of 2.2x. That reflects both strong cash generation and disciplined deployment. Looking ahead to 2026, our priorities remain unchanged. We're committed to maintaining an attractive and stable dividend through the spin transaction. And to that end, our Board approved an annual dividend of $0.66 per share or $0.165 per quarter for 2026. We also continue to invest selectively where returns are compelling. In January, we invested approximately $115 million to fund our proportional share of the SWAT OpEx acquisition with BRIS. A strategic transaction that enhances resilience to CapEx cycles and supports our OpEx expansion. As we execute this investment and absorb typical first quarter cash uses, including incentive payments, leverage may trend up modestly in the first half of the year before coming back down below the targeted 2.5 level as cash builds throughout the year. Ahead of respective Investor Days, which we plan to conduct before the spin, each segment will assess its capital deployment priorities based on its stand-alone profile. I'll now turn to Slide 16 and our fiscal 2026 guidance. We're providing full year outlook for a consolidated company to establish a clear baseline. The stand-alone outlook to be updated as we progress towards the planned spin in the second half of 2026. With that in mind, for fiscal 2026, we are guiding revenues in the range of $7.9 billion to $8.36 billion, adjusted EBITDA of $980 million to $1.04 billion, adjusted EPS of $3.87 to $4.22 and adjusted operating cash flow of $560 million to $600 million. At the midpoint, this implies approximately 4% year-over-year growth across all key metrics. We expect transition costs related to the spin to be approximately $140 million to $180 million, inclusive of onetime IT capital costs. To ensure transparency around ongoing performance, we will introduce an adjusted operating cash flow and an adjusted free cash flow metric in 2026 that add back spin-related cash outflows, allowing investors to better assess the core cash-generating capability of the business. From a modeling perspective, the guide assumes low double-digit growth in STS at our normative long-term margins of 20% plus. MTS is expected to grow at low single digits, also at a normative margin of 10% plus, which we expect to continue to improve over time. Capital expenditures are expected to be in the range of $40 million to $50 million for the year. Our projected effective tax rate is 26% to 28%, higher than the current year, and as I mentioned earlier, primarily reflecting a greater mix of work in the Global South. Estimated adjusted share count was 127 million, which is exactly where we exited 2025. We expect revenues and adjusted EPS to be weighted approximately 46% to the first half and 54% to the second half of the year. For modeling purposes, we expect Q1 '26 to be largely in line with Q4 '25. And on a recast basis, we anticipate moderate sequential growth in MTS as EUCOM is at its base activity levels and partially offset by seasonal sequential declines in FTS. As a reminder, we will be comping against elevated EUCOM contingency in the first 2 quarters of '26, which is roughly $60 million to $70 million per quarter. Our guidance includes key assumptions that are worth highlighting given the current political and economic environment. First, we assume the resolution of outstanding protests in the first half of the year. With award cadence in Mission Tech improving as the year progresses. Second, we assume that all material programs we currently support remain in place. Should that change materially, we will, of course, update as appropriate. Third, we assume modest improvement in interest rates in the second half of the year and stable foreign exchange rates relative to current levels. In closing, our 2026 guidance reflects a disciplined view of the current environment. We entered the year with solid work under contract, strong growth momentum and a highly committed global team. And with that, I'll turn it back to Stuart.